function openPopup(myLink,windowName,width_var,height_var)
{
	if(! window.focus)return;
	var myWin=window.open(myLink.href,windowName,"height=" + height_var + ",width=" + width_var + ",toolbar=0,menubar=0,dependent=yes,scrollbars=no");
	myWin.focus();
}

function playvdo(filename) {
	var fileobj = document.getElementById('frame');
	fileobj.src = filename;
}

function changepic(url,width_var,height_var){
var pic = document.getElementById("mainpic");
pic.src = url;
pic.style.width =width_var;
pic.style.height = height_var;
}